Touch window

ABSTRACT

Disclosed is a touch window. The touch window includes a cover substrate; a substrate on the cover substrate; and an electrode on the substrate, wherein the substrate includes one surface facing the cover substrate and an opposite surface opposite to the one surface, the electrode is disposed on the opposite surface, and the cover substrate and the substrate have flexible curved surfaces.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a Continuation Application of prior U.S. patentapplication Ser. No. 16/176,152 filed on Oct. 31, 2018, which is aContinuation Application of prior U.S. patent application Ser. No.15/946,890 filed on Apr. 6, 2018, which is a Continuation Application ofprior U.S. patent application Ser. No. 14/685,870 filed on Apr. 14,2015, which claims priority under 35 U.S.C. § 119 to Korean ApplicationNo. 10-2014-0044217 filed on Apr. 14, 2014, Korean Application No.10-2014-0066009 filed on May 30, 2014, and Korean Application No.10-2014-0084777 filed on Jul. 7, 2014, whose entire disclosures areincorporated herein by reference.

BACKGROUND 1. Field

The embodiment relates to a touch window.

2. Background

Recently, a touch panel, which performs an input function through thetouch of an image displayed on a display device by an input device suchas a stylus pen or a hand, has been applied to various electronicappliances.

The touch panel may be representatively classified into a resistivetouch panel and a capacitive touch panel. In the resistive touch panel,the position of the touch point is detected by detecting the variationof resistance according to the connection between electrodes whenpressure is applied to the input device. In the capacitive touch panel,the position of the touch point is detected by detecting the variationof capacitance between electrodes when a finger of the user touches thecapacitive touch panel. When taking into consideration the convenienceof a fabrication scheme and a sensing power, the capacitive touch panelhas been spotlighted in a smaller model touch panel recently.

According to the touch window, a sensing electrode and a wire electrodeconnected to the sensing electrode are disposed on a substrate, and whenan area on which the sensing electrode is disposed is touched, thevariation of capacitance is sensed so that the position of the touchpoint can be detected.

In this case, the sensing electrode and the wire electrode may bedisposed on one surface of a single substrate or one surfaces of aplurality of substrates, respectively.

Meanwhile, in recent years, a touch window having a curved surface or abendable structure is increasingly requested. As the touch window, thatis, the substrate is bent, a stress may be generated to an electrodedisposed on the substrate, so that crack occurs in the electrode due tothe stress, thereby damaging the electrode.

Therefore, a touch window having a new structure capable of solving theabove problem is required.

BRIEF DESCRIPTION OF THE DRAWINGS

The embodiments will be described in detail with reference to thefollowing drawings in which like reference numerals refer to likeelements wherein:

FIG. 1 is an exploded perspective view showing a touch window accordingto the first embodiment.

FIG. 2 is another exploded perspective view showing the touch windowaccording to the first embodiment.

FIG. 3 is still another exploded perspective view showing the touchwindow according to the first embodiment.

FIG. 4 is a sectional view taken along line A-A′ of FIG. 1.

FIG. 5 is another sectional view taken along line A-A′ of FIG. 1.

FIG. 6 is still another sectional view taken along line A-A′ of FIG. 1.

FIG. 7 is an exploded perspective view showing a touch window accordingto the second embodiment.

FIG. 8 is another exploded perspective view showing the touch windowaccording to the second embodiment.

FIG. 9 is still another exploded perspective view showing the touchwindow according to the second embodiment.

FIG. 10 is a sectional view taken along line B-B′ of FIG. 7.

FIG. 11 is another sectional view taken along line B-B′ of FIG. 7.

FIG. 12 is still another sectional view taken along line B-B′ of FIG. 7.

FIG. 13 is an exploded perspective view showing a touch window accordingto the third embodiment.

FIG. 14 is another exploded perspective view showing a touch windowaccording to the third embodiment.

FIG. 15 is a sectional view taken along line C-C′ of FIG. 13.

FIG. 16 is another sectional view taken along line C-C′ of FIG. 13.

FIG. 17 is still another sectional view taken along line C-C′ of FIG.13.

FIG. 18 is a plan view showing a touch window according to the fourthembodiment.

FIG. 19 is a sectional view showing the touch window according to thefourth embodiment.

FIG. 20 is another sectional view showing the touch window according tothe fourth embodiment.

FIG. 21 is still another sectional view showing the touch windowaccording to the fourth embodiment.

FIG. 22 is an exploded perspective view showing a touch window accordingto the fifth embodiment.

FIG. 23 is a sectional view showing the touch window according to thefifth embodiment.

FIG. 24 is a sectional view showing a touch window according to thesixth embodiment.

FIG. 25 is an exploded perspective view showing a touch window accordingto the seventh embodiment.

FIG. 26 is a sectional view taken along line D-D′ of FIG. 25.

FIGS. 27 to 29 are sectional views showing a touch window according tothe eighth embodiment.

FIG. 30 is an exploded perspective view showing a touch window accordingto the 9-th embodiment.

FIG. 31 is a sectional view taken along line E-E′ of FIG. 30.

FIG. 32 is an exploded perspective view showing a touch window accordingto the 10-th embodiment.

FIG. 33 is a sectional view taken along line F-F′ of FIG. 32.

FIG. 34 is an exploded perspective view showing a touch window accordingto the 11-th embodiment.

FIG. 35 is a sectional view taken along line G-G′ of FIG. 34.

FIG. 36 is an exploded perspective view showing a touch window accordingto the 12-th embodiment.

FIG. 37 is a sectional view taken along line H-H′ of FIG. 36.

FIGS. 38 to 40 are sectional views showing a touch window according tothe 13-th embodiment.

FIGS. 41 to 44 are views illustrating a process of forming a sensingelectrode and/or a wire electrode according to embodiments.

FIGS. 45 to 48 are views showing examples of touch devices to which thetouch windows according to the embodiments are applied.

DETAILED DESCRIPTION

In the following description of the embodiments, it will be understoodthat, when a layer (or film), a region, a pattern, or a structure isreferred to as being “on” or “under” another substrate, another layer(or film), another region, another pad, or another pattern, it can be“directly” or “indirectly” on the other substrate, layer (or film),region, pad, or pattern, or one or more intervening layers may also bepresent. Such a position of the layer has been described with referenceto the drawings.

In the following description, when a part is connected to the otherpart, the parts are not only directly connected to each other, but alsoindirectly connected to each other while interposing another parttherebetween. In addition, when a predetermined part “includes” apredetermined component, the predetermined part does not exclude othercomponents, but may further include other components unless otherwiseindicated.

The thickness and size of each layer (or film), each region, eachpattern, or each structure shown in the drawings may be modified for thepurpose of convenience or clarity of the explanation. In addition, thesize of elements does not utterly reflect an actual size.

Hereinafter, the embodiment will be described with reference toaccompanying drawings.

Referring to FIGS. 1 to 6, a touch window according to the firstembodiment may include a cover substrate 100 and/or a substrate 200, asensing electrode and a wire electrode.

The cover substrate 100 may be flexible or rigid. For example, the coversubstrate 100 may include glass or plastic. In detail, the coversubstrate 100 may include chemically tempered glass such as soda limeglass or aluminosilicate glass, or plastic such as polyethyleneterephthalate (PET).

In addition, referring to FIG. 2, the cover substrate may not bedisposed on the substrate 200. The substrate itself may perform afunction of the cover substrate and may support electrodes.

Hereinafter, the touch window according to the first embodiment will bedescribed focused on FIG. 1 in which the cover substrate disposed isdepicted.

Referring to FIG. 1, the substrate 200 may be disposed on the coversubstrate 100. For example, the substrate 200 may be disposed under thecover substrate 100.

In addition, the substrate 200 may adhere to the cover substrate 100.For example, the cover substrate 100 and the substrate 200 may adhere toeach other through a transparent adhesive material such as an opticalclear adhesive (OCA) layer.

The substrate 200 may be flexible. For example, the substrate 200 mayinclude plastic. In detail, the substrate 200 may include plastic suchas polyethylene terephthalate (PET). In detail, as shown in FIG. 2, whenthe substrate 200 simultaneously performs a function of the coversubstrate, the substrate 200 may include a flexible and rigid material.An active area AA and an unactive area UA may be defined in the coversubstrate 100 and/or the substrate 200.

An image may be displayed in the active area AA and the image may not bedisplayed in the unactive area UA provided around the active area AA.

In addition, the position of an input device (e.g., finger) may besensed in at least one of the active area AA and the unactive area UA.If the input device, such as a finger, touches the touch window, thevariation of capacitance occurs in the touched part by the input device,and the touched part subject to the variation of the capacitance may bedetected as a touch point. The substrate 200 may include two surfacesconcerned with the cover window. In detail, the substrate 200 mayinclude one surface 200 a facing the cover substrate 100 and the othersurface 200 b opposite to the one surface 200 a.

First and second sensing electrodes 310 and 320 and first and secondwire electrodes 410 and 420 may be disposed on the substrate 200. Indetail, the first and second sensing electrodes 310 and 320 and thefirst and second electrodes 410 and 420 may be disposed on the othersurface 200 b of the substrate 200. That is, in the touch windowaccording to the embodiment, the cover substrate 100, the substrate 200and an electrode may be sequentially disposed.

The first and second sensing electrodes 310 and 320 may be disposed onthe active area AA of the substrate 200. The first and second sensingelectrodes 310 and 320 may extend in mutually different directions andmay be disposed on the active area AA of the substrate 200. Aninsulating layer may be interposed between the first and second sensingelectrode 310 and 320 to insulate the first and second sensingelectrodes 310 and 320 from each other. For example, the insulatinglayer 330 may cover the entire surface of the first sensing electrode310, such that the first and second sensing electrode 310 and 320 may beinsulated from each other.

The insulating layer 330 may include a material different from the coversubstrate 100 and/or the substrate 200. For example, the insulatinglayer 330 may include a dielectric material.

For example, the insulating layer 330 may include an insulating groupincluding halogen compound of alkali metal or alkali earth metal, suchas LiF, KCl, CaF₂, or MgF₂, or fused silica, such as SiO₂, SiN_(x),etc.; a semiconductor group including InP or InSb; transparent oxideused for semiconductor or dielectric substance including In compound,such as ITO or IZO, mainly used for a transparent electrode, ortransparent oxide used for semiconductor or dielectric substance, suchas ZnO_(x), ZnS, ZnSe, TiO_(x), WO_(x), MoO_(x), or ReO_(x); an organicsemiconductor group including Alq3, NPB, TAPC, 2TNATA, CBP or Bphen; anda low-K material such as silsesquioxane or a derivative((H—SiO_(3/2))_(n)) thereof, methylsilsesquioxane (CH₃—SiO_(3/2))_(n)),porous silica or porous silica doped with fluorine or carbon atoms,porous zinc oxide (ZnOx), cyclized-perfluoropolymer (CYTOP) or a mixturethereof.

In addition, the insulating layer 330 may have visible ray transmittanceof about 75% to 99%.

In this case, a thickness of the insulating layer 330 may be less thanthose of the cover substrate 100 and/or the substrate 200. In detail,the thickness of the insulating layer 330 may be about 0.01 to about 0.1times those of the cover substrate 100 and/or the substrate 200. Forexample, thicknesses of the cover substrate 100 and/or the substrate 200may be equal to about 0.1 mm and the thickness of the insulating layer330 may be equal to about 0.001 mm.

The first and second sensing electrodes 310 and 320 may sense a positionof an input device. Although the first and second sensing electrodes 310and 320 are shown in a bar sharp in FIGS. 1 and 2, the embodiment is notlimited thereto. The first and second sensing electrodes 310 and 320 maybe formed in various shapes including a polygonal shape, such as atriangular shape or a diamond shape, a circular shape, an ellipticalshape, a linear shape, or an H shape, which may sense the touch of theinput device such as a finger of a user.

At least one of the first and second sensing electrodes 310 and 320 mayinclude a transparent conductive material that allows electricity toflow therethrough without interrupting transmission of light. Forexample, the sensing electrode 300 may include metal oxide such asindium tin oxide (ITO), indium zinc oxide (IZO), copper oxide, tinoxide, zinc oxide, or titanium oxide.

In addition, at least one of the first and second sensing electrodes 310and 320 may include a nano wire, a photo-sensitive nanowire film, acarbon nanotube (CNT), graphene, or conductive polymer.

In addition, at least one of the first and second sensing electrodes 310and 320 may include various metals. For example, the sensing electrode300 may include at least one of Cr, Ni, Cu, Al, Ag, Mo and the alloythereof.

Referring to FIG. 3, at least one of the first and second sensingelectrodes 310 and 320 may be disposed in a mesh shape.

In detail, at least one of the first and second sensing electrodes 310and 320 may include a plurality of sub-electrodes which cross each otherin a mesh shape.

In detail, referring to FIG. 3, at least one of the first and secondsensing electrodes 310 and 320 may includes mesh lines LA by thesub-electrode crossing each other in a mesh shape and a mesh openingpart OA between the mesh lines LA. In this case, a line width of themesh line LA may be in the range of about 0.1 μm to about 10 μm. If theline width of the mesh line LA is less than about 0.1 t ss thmesh lineLA may not be fabricated. If the line width of the mesh line LA exceedsabout 10 μm, a sensing electrode pattern may be visually recognized froman outside, so that the visibility may be degraded. In addition, theline width of the mesh line LA may be in the range of about 1 μml toabout 5 μm. Preferably, the line width of the mesh line LA may be in therange of about 1.5 μm to about 3 μm.

The mesh opening part OA may have a rectangular shape, but theembodiment is not limited thereto. The mesh opening part OA may havevarious shapes such as a polygonal shape including a diamond shape, apentagon shape, or a hexagonal shape, or a circular shape. In addition,the mesh opening part OA may have a regular shape or a random shape.

The sensing electrode may have a mesh shape, so that the sensingelectrode pattern may not be viewed on the active area AA. That is, eventhough the sensing electrode is formed of metal, the pattern may not beviewed. In addition, even if the sensing electrode is applied to alarge-size touch window, the resistance of the touch window may belowered.

The first and second wire electrodes 410 and 420 may be disposed on theunactive area UA of the substrate 200. In detail, one ends of the firstand second wire electrodes 410 and 420 may be connected to the first andsecond sensing electrodes 310 and 320, and the other ends may beconnected to a printed circuit board. Various types of printed circuitboards may serve as the printed circuit board. For example, a flexibleprinted circuit board (FPCB) may be applied as the printed circuitboard.

The first and second wire electrodes 410 and 420 may include a metalhaving excellent conductance. For example, the first and second wireelectrodes 410 and 420 may include at least one of Cr, Ni, Cu, Al, Ag,Mo and the alloy thereof.

Referring to FIGS. 5 and 6, the substrate 200 may be a curved substrateor a flexible substrate. For example, the substrate 200 may be bent orhave a curved surface in an opposite surface direction.

In detail, the substrate 200 may have an entirely or partially curvedsurface.

Referring to FIG. 5, the substrate 200 may be flexible while entirelyhaving a curved surface.

In addition, referring to FIG. 6, the substrate 200 may be bent whilehaving a partial curved surface. That is, referring to FIG. 6, thesubstrate 200 may be bent while having a partial flat surface P and apartial curved surface C. In detail, an end of the substrate 200 may bebent while having a curved surface.

Since the substrate 200 includes both the flat surface P and the curvedsurface C, a touch operation and the display area may be utilizedthrough the flat surface similarly to the related art. At the same time,the display area having the curved surface may be utilized, so thatvarious touches and convenience may be provided to a user.

Since the first and second sensing electrodes 310 and 320 are disposedon the other surface 200 b of the substrate 200, the first and thesecond electrodes 310 and 320 may be disposed on an inner surface of thebendable substrate 200. That is, the first and second sensing electrodes310 and 320 may be disposed on a compressed surface of the substrate200.

That is, the other surface 200 b of the substrate 200 on which the firstand second sensing electrodes 310 and 320 are disposed may be the sameas the inner surface of the bendable substrate 200 and the compressedsurface of the substrate 200.

When the substrate 200 has a curved surface or is bent, various stressessuch as compressive force, tension and shearing force may be applied tothe first and second sensing electrodes 310 and 320, so that the firstand second sensing electrodes 310 and 320 may be modified or damaged dueto the stresses.

In this case, the stress applied to the first and second sensingelectrodes 310 and 320 may be reduced when the first and second sensingelectrodes 310 and 320 are disposed on the inner surface of the bendablesubstrate and the compressed surface of the substrate 200, as comparedwith when the first and second sensing electrodes 310 and 320 aredisposed on an outer bent surface, that is, expanded surface of thebendable substrate 200.

Thus, when the substrate 200 has a curved surface or is bent, the firstand second sensing electrodes 310 and 320 disposed on the substrate 200may be prevented from being damaged due to stresses, so that the bendingproperty and reliability of the flexible touch window may be improved.

Hereinafter, a touch window according to the second embodiment will bedescribed with reference to FIGS. 7 to 12. In the following descriptionof the touch window according to the second embodiment, the detaileddescriptions about the parts similar or identical to those described inthe touch windows of the first embodiment will be omitted in order toavoid redundancy.

Referring to FIGS. 7 to 12, a touch window according to the secondembodiment may include a cover substrate 100, and first and secondsubstrates 210 and 220.

The first substrate 210 may be disposed on the cover substrate 100 andthe second substrate 220 may be disposed on the first substrate 210. Indetail, the first substrate may be disposed below the cover substrate100 and the second substrate 220 may be disposed below the firstsubstrate 210.

In addition, referring to FIG. 8, the cover substrate may not bedisposed on the first substrate 210. The first substrate itself mayperform a function of the cover substrate and may support electrodes.

In addition, referring to FIG. 9, the cover substrate 100 may bedisposed on the first substrate 210, and an electrode having a meshshape may be disposed on at least one of the first and second substrates210 and 220.

Hereinafter, the touch window according to the second embodiment will bedescribed focused on FIG. 7 in which the cover substrate disposed isdepicted.

Referring to FIG. 7, transparent adhesive layers such as optical clearadhesive (OCA) layers may be interposed between the cover substrate 100and the first substrate 210 and between the first and second substrates210 and 220, so that the cover substrate 100 and the first and secondsubstrates 210 and 220 may adhere to each other.

The first substrate 210 may include two surfaces according to apositional relationship with the cover substrate 100. In detail, thefirst substrate 210 may include a first surface 210 a facing the coversubstrate 100 and a first opposite surface 210 b opposite to the firstsurface 210 a.

In addition, the second substrate 220 may include both surfacesaccording to a positional relationship with the first substrate 210. Indetail, the second substrate 220 may include a second surface 220 afacing the first substrate 210 and a second opposite surface 220 bopposite to the second surface 220 a.

The first sensing and wire electrodes 310 and 410 may be disposed on thefirst substrate 210. In detail, the first sensing and wire electrodes310 and 410 may be disposed on the first opposite surface 210 b of thefirst substrate 210.

In addition, the second sensing and wire electrodes 320 and 420 may bedisposed on the second substrate 220. In detail, the second sensing andwire electrodes 320 and 420 may be disposed on the second oppositesurface 220 b of the second substrate 220.

Referring to FIGS. 11 and 12, the first and second substrates 210 and220 may be a curved or flexible substrate.

In detail, the first and second substrate 210 and 220 may entirely orpartially have curved surfaces.

Referring to FIG. 11, the first and second substrates 210 and 220 may beflexible while entirely having curved surfaces.

In addition, referring to FIG. 12, the first and second substrates 210and 220 may be bent while having partial curved surfaces. That is,referring to FIG. 12, the first and second substrates 210 and 220 may bebent while having partial flat surfaces P and partial curved surfaces C.In detail, ends of the first and second substrates 210 and 220 may bebent while having curved surfaces.

Since the first and second substrates 210 and 220 include both the flatsurfaces P and the curved surfaces C, a touch operation and the displayarea may be utilized through the flat surfaces similarly to the relatedart. At the same time, the display area having the curved surfaces maybe utilized, so that various touches and convenience may be provided toa user.

The first and second substrates 210 and 220 may have curved surfaces orbe bent in the first and second opposite directions.

Since the first sensing electrode 310 is disposed on the first oppositesurface 210 a of the first substrate 210 and the second sensingelectrode 320 is disposed on the second opposite surface 210 a of thesecond substrate 220, the first and second sensing electrodes 310 and320 may be disposed on inner surfaces of the first and second bendablesubstrates 210 and 220. That is, the first and second sensing electrodes310 and 320 may be disposed on compressed surfaces of the first andsecond substrate 210 and 220.

That is, the first and second opposite surfaces 210 b and 220 b of thefirst and second substrates 210 and 220 on which the first and secondsensing electrodes 310 and 320 are disposed may be the same as the innersurfaces of the first and second bendable substrate 210 and 220, and thecompressed surfaces of the first and second substrate 210 and 220.

When the first and second substrates 210 and 220 have curved surfaces orare bent, various stresses such as compressive force, tension andshearing force may be applied to the first and second sensing electrodes310 and 320, so that the first and second sensing electrodes 310 and 320may be modified or damaged due to the stresses.

In this case, the stress applied to the first and second sensingelectrodes 310 and 320 may be reduced when the first and second sensingelectrodes 310 and 320 are disposed on the inner surfaces and thecompressed surfaces of the first and second bendable substrates 210 and220, as compared with when the first and second sensing electrodes 310and 320 are disposed on the outer surfaces, that is, the expandedsurfaces of the first and second substrate 210 and 220.

Thus, when the first and second substrates 210 and 220 have curvedsurfaces or are bent, the first and second sensing electrodes 310 and320 may be prevented from being damaged due to stresses, so that thebending property and reliability of the flexible touch window may beimproved.

Hereinafter, a touch window according to the third embodiment will bedescribed with reference to FIGS. 13 to 17. In the following descriptionof the touch window according to the third embodiment, the detaileddescriptions about the parts similar or identical to those described inthe touch windows of the first and/or second embodiments will be omittedin order to avoid redundancy.

Referring to FIGS. 13 to 17, a touch window according to the thirdembodiment may include first and second substrates 210 and 220, and anintermediate layer 500.

A cover substrate (not shown) may be further disposed on the firstsubstrate 210. In addition, the first substrate 210 may supportelectrodes while performing a function of the cover substrate.

The intermediate layer 500 140 may be disposed on the first substrate210. The second substrate 220 may be disposed on the intermediate layer500. In detail, the intermediate layer 500 may be disposed below thefirst substrate 210 and the second substrate 220 may be disposed belowthe intermediate layer 500.

A transparent adhesive layer such as an OCA layer may be interposedbetween the first substrate 210 and the intermediate layer 500, so thatthe first substrate and the intermediate layer 500 may adhere to eachother.

The intermediate layer 500 may include two surfaces according to apositional relationship with the first substrate 210. In detail, theintermediate layer 500 may include a first surface 500 a facing thefirst substrate 210 and a first opposite surface 500 b opposite to thefirst surface 500 a.

In addition, the second substrate 220 may include both surfacesaccording to a positional relationship with the intermediate layer 500.In detail, the second substrate 220 may include a second surface 220 afacing the intermediate layer 500 and a second opposite surface 220 bopposite to the second surface 220 a.

The first sensing and wire electrodes 310 and 410 may be disposed on theintermediate layer 500. In detail, the first sensing and wire electrodes310 and 410 may be disposed on the first opposite surface 500 b of theintermediate layer 500.

In addition, the second sensing and wire electrodes 320 and 420 may bedisposed on the second substrate 220. In detail, the second sensing andwire electrodes 320 and 420 may be disposed on the second oppositesurface 220 b of the second substrate 220.

The intermediate layer 500 may support the second sensing and wireelectrodes 320 and 420 while insulating the first and second sensingelectrodes 310 and 320 from each other.

The intermediate layer 500 may include a material different from thefirst substrate 210 and/or the second substrate 220. For example,intermediate layer 500 may include a dielectric material.

For example, the intermediate layer 500 may include an insulating groupincluding halogen compound of alkali metal or alkali earth metal, suchas LiF, KCl, CaF2, or MgF2, or fused silica, such as SiO2, SiNX, etc.; asemiconductor group including InP or InSb; transparent oxide used forsemiconductor or dielectric substance including In compound, such as ITOor IZO, mainly used for a transparent electrode, or transparent oxideused for semiconductor or dielectric substance, such as ZnO_(x), ZnS,ZnSe, TiO_(x), WO_(x), MoO_(x), or ReO_(x); an organic semiconductorgroup including Alq3, NPB, TAPC, 2TNATA, CBP or Bphen; and a low-Kmaterial such as silsesquioxane or a derivative ((H—SiO_(3/2))_(n))thereof, methylsilsesquioxane (CH₃—SiO_(3/2))_(n)), porous silica orporous silica doped with fluorine or carbon atoms, porous zinc oxide(ZnO_(x)), cyclized-perfluoropolymer (CYTOP) or a mixture thereof.

In addition, the intermediate layer 500 may have visible raytransmittance of about 75% to 99%.

In this case, a thickness of the intermediate layer 500 may be less thanthose of the substrates 210 and 220. In detail, the thickness of theintermediate layer 500 may be about 0.01 to about 0.1 times those of thesubstrates 210 and 220. For example, the thicknesses of the substrates210 and 220 may be equal to about 0.1 mm and the thickness of theintermediate layer 500 may be equal to about 0.001 mm.

The intermediate layer 500 may be directly disposed on a top surface ofthe second substrate 220. That is, a dielectric material may be directlycoated on the top surface of the second substrate 220 on which thesecond sensing electrode 320 is disposed, such that the intermediatelayer 500 may be formed. Then, the first sensing electrode 310 may bedisposed on the intermediate layer 500.

Thus, the touch window according to the third embodiment may have athickness less than that of the structure having two substratesaccording to the related art. Specifically, the intermediate layer maysubstitute for one substrate and the adhesive layer so that the touchwindow having a thin thickness may be secured.

In addition, in the structure in which two substrates are stackedaccording to the related art, OCA is further required between thesubstrates. However, according to the touch window of the thirdembodiment, a single substrate is used and the sensing electrode isdirectly formed on the intermediate layer, so that the OCA may beomitted, thereby reducing the cost.

That is, by securing the touch window having a thin thickness throughthe intermediate layer, the transmittance may be improved.

Referring to FIGS. 15 and 16, the intermediate layer 500 and thesubstrate 200 may have curved surfaces or be bent. For example, theintermediate layer 500 and the substrate 200 may have curved surfaces orbe bent in the directions of the first and second opposite surfaces ofthe intermediate layer 500 and the substrate 200.

In detail, the intermediate layer 500, and the first and secondsubstrates 210 and 220 may have entirely or partially curved surfaces.

Referring to FIG. 15, the intermediate layer 500, and the first andsecond substrates 210 and 220 may be flexible while having entirelycurved surfaces.

In addition, referring to FIG. 16, the intermediate layer 500, and thefirst and second substrates 210 and 220 may be bent while having partialcurved surfaces. That is, referring to FIG. 16, the intermediate layer500, and the first and second substrates 210 and 220 may be bent whilehaving partial flat surfaces P and partial curved surfaces C. In detail,ends of the intermediate layer 500 and the first and second substrates210 and 220 may be bent while having curved surfaces.

Since the intermediate layer 500, and the first and second substrates210 and 220 include both the flat surfaces P and the curved surfaces C,a touch operation and the display area may be utilized through the flatsurfaces similarly to the related art and at the same time, the displayarea having the curved surface may be utilized, so that various touchesand convenience may be provided to a user.

Since the first sensing electrode 310 is disposed on the first oppositesurface 500 a of the intermediate layer 500 and the second sensingelectrode 320 is disposed on the second opposite surface 200 b of thesubstrate 200, the first and the second electrodes 310 and 320 may bedisposed on inner surfaces of the bendable intermediate layer 500 andthe bendable substrate 200. That is, the first and second electrodes 310and 320 may be disposed on compressed surfaces of the intermediate layer500 and the substrate 200.

That is, the first and second opposite surfaces 500 b and 200 b of theintermediate layer 500 and the substrate 200 on which the first andsecond sensing electrodes 310 and 320 are disposed may be the same asthe inner surfaces of the bendable intermediate layer 500 and thebendable substrate 200 and the compressed surfaces of the intermediatelayer 500 and the substrate 200.

When the intermediate layer 500 and the substrate 200 have curvedsurfaces or are bent, various stresses such as compressive force,tension and shearing force may be applied to the first and secondsensing electrodes 310 and 320, so that the first and second sensingelectrodes 310 and 320 may be modified or damaged due to the stresses.

In this case, the stress applied to the first and second sensingelectrodes 310 and 320 may be reduced when the first and second sensingelectrodes 310 and 320 are disposed on the inner surfaces and thecompressed surfaces of the bendable intermediate layer 500 and thebendable substrate 200, as compared with when the first and secondsensing electrodes 310 and 320 are disposed on outer surfaces, that is,the expanded surfaces of the intermediate layer 500 and the substrate200.

Thus, when the intermediate layer 500 and the substrate 200 have curvedsurfaces or are bent, the first and second sensing electrodes 310 and320 each disposed on the intermediate layer 500 and the substrate 200may be prevented from being damaged due to stresses, so that the bendingproperty and reliability of the flexible touch window may be improved.

Hereinafter, a touch window according to the fourth embodiment will bedescribed with reference to FIGS. 18 to 21. In the following descriptionof the touch window according to the fourth embodiment, the detaileddescriptions about the parts similar or identical to those described inthe touch windows of the first to third embodiments will be omitted inorder to avoid redundancy.

Referring to FIGS. 18 to 21, a touch window according to the fourthembodiment may include a substrate 200 divided into an active area AAand an unactive area UA.

The wire electrode 400 may be disposed on the unactive area UA of thesubstrate 200. An electrical signal may be applied to the sensingelectrode 300 through the wire electrode 400. The wire electrode 400 mayinclude the first and second electrodes 410 and 420. The wire electrode400 may be disposed on the unactive area UA and may not be viewed froman outside due to the printing layer disposed on the unactive area.

The wire electrode 400 may include a material equal to or different fromthat of the sensing electrode 300 formed on the active area AA anddescribed above. In addition, the wire electrode 400 may be formedthrough a process equal to or different from that of the sensingelectrode 300.

Meanwhile, although not shown in the drawings, a printed circuit boardconnected to the wire electrode 400 may be further placed. Various typesof printed circuit boards may serve as the printed circuit board. Forexample, a flexible printed circuit board (FPCB) may be applied as theprinted circuit board.

In addition, a printing layer (not shown) may be formed on the unactivearea UA of the substrate 200. The printing layer may be coated with amaterial having a predetermined color, so that the wire 400 and theprinted circuit board connecting the wire electrode 400 to an externalcircuit may not be viewed from the outside.

The printing layer may have a color suitable for a desired outerappearance thereof. For example, the printing layer includes blackpigments to represent black. In addition, a desired logo may be formedin the printing layer through various schemes. The printing layer may beformed through deposition, print, and wet coating schemes.

The sensing electrode 300 may be formed on the active area AA of thesubstrate 200. The sensing electrode 300 may be disposed on the activearea AA of the substrate 200 to serve as a sensor for sensing a touch.That is, the sensing electrode 300 may sense whether an input devicesuch as a finger is touched thereon.

The sensing electrode 300 may include the first and second electrodes310 and 320. The first and second sensing electrodes 310 and 320 mayinclude the same material or mutually different materials. The firstsensing electrode 310 may be electrically connected to the first wireelectrode 410 and the second sensing electrode 320 may be electricallyconnected to the second wire electrode 420.

The first and second electrodes 310 and 320 may be disposed on thesubstrate 200. The first and second electrodes 310 and 320 may bedisposed on the same surface of the substrate 200.

The first and second sensing electrodes 310 and 320 may be disposed onthe active area AA to sense a touch. In detail, the first sensingelectrode 310 may extend on the active area AA in a first direction, andthe second sensing electrode 320 may be extend in a second directiondifferent from the first direction. In this case, the first directionmay be perpendicular to the second direction.

The first sensing electrode 310 may include a plurality of firstelectrode parts 311 and connection parts 312. The first electrode parts311 may extend in the first direction. In this case, the first electrodeparts 311 may be electrically connected to each other through theconnection parts 312. The first electrode parts 311 and the connectionparts 312 may be formed integrally with each other.

Although the first electrode parts 311 disposed in a rhombus shape aredepicted in the drawings, the embodiment is not limited thereto and thefirst electrode parts 311 may be formed in various shapes such as apolygonal shape including a bar shape, a triangular shape and arectangular shape, a circular shape, a linear shape, an H-shape or anelliptical shape.

The first sensing electrode 310 may be connected to the first wireelectrode 410 disposed on the unactive area UA. The first sensingelectrode 310 and the first wire electrode 410 may be disposed on thesame layer. In addition, the first sensing electrode 310 and the firstwire electrode 410 may be formed through the same process. In this case,the first sensing electrode 310 and the first wire electrode 410 may beformed integrally with each other.

In addition, the second sensing electrode 320 may include a plurality ofsecond electrode parts 321 and second connection parts 322. The secondelectrode parts 321 may extend in the second direction. In this case,the second electrode parts 321 may be electrically connected to eachother through the second connection parts 322. The second electrodeparts 321 and the second connection parts 322 may be formed integrallywith each other.

Although the second electrode parts 321 disposed in a rhombus shape aredepicted in the drawings, the embodiment is not limited thereto and thesecond electrode parts 321 may be formed in various shapes such as a barshape, a polygonal shape including a triangular shape and a rectangularshape, a circular shape, a linear shape, an H-shape or an ellipticalshape.

The first insulating layer 331 may be disposed between the first andsecond sensing electrode 310 and 320. In addition, a ground wire 430 mayoverlap the first wire electrode 410 while interposing the firstinsulating layer 331 therebetween on the first wire electrode 410. Thatis, a part of the first wire electrode 410 may overlap a part of theground wire 430.

In detail, the first sensing electrode 310 and the first wire electrode410 are disposed on the substrate 200, and the first insulating layer331 is disposed on the first sensing electrode 310 and the first wireelectrode 410. Then, the second sensing electrode 320 and the groundwire 430 may be disposed on the first insulating layer 331.

That is, the ground wire 430 may be disposed on the same layer togetherwith the second sensing electrode 320. In addition, the second sensingelectrode 320 and the ground wire 430 may be formed through the sameprocess. The second sensing electrode 320 and the ground wire 430 may beformed of the same material and may be spaced apart from each other.

The first insulating layer 331 may be disposed on the entire surface ofthe substrate 200 on which the first sensing electrode 310 and the firstwire electrode 410 are disposed. The first insulating layer 331 may bedisposed only on low portions of the second sensing electrode 320 andthe ground wire 430. That is, it is sufficient if the first insulatinglayer 331 has a shape to electrically insulate the first and secondsensing electrodes 310 and 320 from each other and the first wireelectrode 410 from the ground wire 430.

A second insulating layer 332 is disposed on the ground wire 430. Thesecond wire electrode 420 overlapping the ground wire 430 is disposed onthe second insulating layer 332. That is, a part of the ground wire 430may overlap a part of the second wire electrode 420.

In addition, the first wire electrode 410 may overlap the second wireelectrode 420. The first and second wire electrodes 410 and 420 may bedisposed on mutually different layers, and at least a part of the secondwire electrode 420 may overlap the first wire electrode 410. That is, apart of the first wire electrode 410 may overlap a part of the secondwire electrode 420.

In this case, the ground wire 430 may be interposed between the firstand second wire electrodes 410 and 420. The shape of the ground wire 430is not limited to those depicted in the drawings. That is, it issufficient if the ground wire 430 is disposed between the first andsecond wire electrodes 410 and 420 in an overlap area of the first andsecond wire electrodes 410 and 420.

In an area of sequentially stacking the first wire electrode 410, theground wire 430 and the second wire electrode 420, the first insulatinglayer 210 is formed between the ground wire 430 and the first wireelectrode 410. In addition, the second insulating layer 220 may beformed between the ground wire 430 and the second wire electrode 420.

When the first and second wire electrodes 410 and 420 are disposed onthe same layer, since the first and second wire electrodes 410 and 420must be spaced apart from each other, the bezel is enlarged. Inaddition, when first and second wire electrodes 410 and 420 are disposedon mutually different layers and overlap each other, parasiticcapacitance is generated. Thus, when the first and second wireelectrodes 410 and 420 are disposed on mutually different layers andoverlap each other, since the first and second wire electrodes 410 and420 must be disposed not to overlap each other, it is difficult toachieve a narrow bezel. In addition, it is more difficult to achieve anarrow bezel due to a tolerance for allowing the first and second wireelectrodes 410 and 420 to be spaced apart from each other.

According to the touch window of the fourth embodiment, since the firstand second wire electrodes 410 and 420 overlap each other, there is noneed to take into consideration the distance between the first andsecond wire electrodes 410 and 420 and the tolerance, so that a narrowbezel may be formed. In addition, since the ground wire 430 is formedbetween the first and second wire electrodes 410 and 420 in the overlaparea of the first and second wire electrodes 410 and 420, the parasiticcapacitor may be prevented from being generated.

The second insulating layer 332 may surround top and side surfaces ofthe ground wire 430. The second insulating layer 332 may be spaced apartfrom the second sensing electrode 320, but the embodiment is not limitedthereto. The second insulating layer 332 may be disposed on the entiresurface of the substrate 200 on which the ground wire 430 and the secondsensing electrode 320 and may expose a part of the second sensingelectrode 320. That is, the second sensing electrode 320 may be disposedto be exposed.

A connection part 450 for connecting the second sensing electrode 320and the second wire electrode 420 to each other may be disposed. Thatis, the second sensing electrode 320 may be electrically connected tothe second wire electrode 420 through the connection part 450.

The connection part 450 may be formed through a printing process. Forexample, the second sensing electrode 320 may be electrically connectedto the second wire electrode 420 through a printing process of Ag paste,but the embodiment is not limited thereto. It is sufficient if theconnection part 450 has a configuration of electrically connecting thesecond sensing electrode 320 to the second wire electrode 420.

Referring to FIG. 20, the touch window according to the fourthembodiment includes a substrate 200 which is divided into a display areaand a non-display area. The first sensing electrode 310 is disposed inthe display area on the substrate 200 and the first wire electrode 410is disposed in the non-display area. The first insulating layer 331 isformed on the first sensing electrode 310 and the first wire electrode410.

The ground wire 430, a part of which overlaps the second sensingelectrode 320 extending in a direction different from the first sensingelectrode 310 and the first wire electrode 410, is disposed on the firstinsulating layer 331. The second insulating layer 332 is disposed on theground wire 430 to surround the ground wire 430 and expose the secondsensing electrode 320.

The second wire electrode 420 is disposed on the second insulating layer332 to allow at least a part of the second wire electrode 420 to overlapthe first wire electrode 410 and the ground wire 430. In addition, theconnection part 450 is disposed to electrically connect the second wireelectrode 420 to the second sensing electrode 320.

The cover substrate 100 is disposed on the substrate 200 on which theconnection part 450. The cover substrate 100 may be disposed on thesubstrate 200 on which the first and second sensing electrodes 310 and320 and the first and second wire electrodes 410 and 420.

An adhesive layer 60 may be disposed between the substrate 200 and thecover substrate 100. For example, the adhesive layer 60 may includeoptical clear adhesive (OCA) or optical clear resin (OCR).

Thus, at least a part of the second wire electrode 420 is disposed tooverlap the first wire electrode 410. The ground wire 430 is disposedbetween the first and second wire electrodes 410 and 420 in the overlaparea of the first and second wire electrodes 410 and 420. For thisreason, the bezel may be narrowed so that the parasitic capacitance maybe prevented from being generated.

Referring to FIG. 21, the touch window according to the fourthembodiment includes a substrate 200 which is divided into an active areaand an unactive area. The sensing electrode is disposed on the activearea of the substrate 200 and the wire electrode is disposed on theunactive area of the substrate 200. An electrical signal may be appliedto the sensing electrode through the wire electrode and the wireelectrode is formed on the unactive area, so that the wire electrode isnot viewed. In addition, the circuit board connected to the wireelectrode may be placed in the unactive area.

The sensing electrode may include first and second sensing electrodes310 and 320. The first and second sensing electrodes 310 and 320 mayinclude the same material or mutually different materials.

The wire electrode may include first and second wire electrodes 410 and420. The first wire electrode 410 may be electrically connected to thefirst sensing electrode 310 and the second wire electrode 420 may beelectrically connected to the second sensing electrode 320.

The first and second sensing electrodes 310 and 320 may be disposed onthe active area AA to sense a touch. In detail, the first sensingelectrode 310 may extend on the active area AA in a first direction, andthe second sensing electrode 320 may be extend in a second directiondifferent from the first direction. In this case, the first directionmay be perpendicular to the second direction.

In addition, the first and second sensing electrode 310 and 320 may bedisposed on the substrate 200. In this case, the first and secondsensing electrodes 310 and 320 may be disposed on mutually differentsurfaces of the substrate 200. That is, the first sensing electrode 310may be disposed on a rear surface of the substrate 200, and the secondsensing electrode 320 may be disposed on a top surface of the substrate200. The substrate 200 may be interposed between the first and secondsensing electrodes 310 and 320.

In detail, the first sensing electrode 310 and the first wire electrode410 formed integrally with the first sensing electrode 310 are disposedon the rear surface of the substrate 200. The second sensing electrode320 and the ground wire 430, which is spaced apart from the secondsensing electrode 320, are formed on the top surface of the substrate200.

The ground wire 430 may be formed to be interposed between the firstwire electrode 410 and the substrate 200. That is, a part of the firstwire electrode 410 may overlap a part of the ground wire 430.

The ground wire 430 and the second sensing electrode 320 may be disposedon the same layer. In addition, the second sensing electrode 320 and theground wire 430 may be formed through the same process. In this case,the second sensing electrode 320 and the ground wire 430 may be formedof the same material and be spaced apart from each other.

The insulating layer 330 is disposed on the ground wire 430. The secondwire electrode 420 which overlaps the ground wire 430 is disposed on theinsulating layer 330. That is, a part of the ground wire 430 may overlapa part of the second wire electrode 420.

In addition, at least a part of the first wire electrode 410 may overlapat least a part of the second wire electrode 420. That is, the first andsecond wire electrodes 410 and 420 may be disposed on mutually differentlayers and a part of the first wire electrode 410 may overlap a part ofthe second wire electrode 420. The first wire electrode 410 may bedisposed on the rear surface of the substrate 200, and the second wireelectrode 420 may be disposed on the top surface of the substrate 200.

In this case, the ground wire 430 may be interposed between the firstand second wire electrodes 410 and 420. The shape of the ground wire 430is not limited to those depicted in the drawings. That is, it issufficient if the ground wire 430 is disposed between the first andsecond wire electrodes 410 and 420 in an overlap area of the first andsecond wire electrodes 410 and 420.

In an area of sequentially stacking the first wire electrode 410, theground wire 430 and the second wire electrode 420, the first insulatinglayer 210 is formed between the ground wire 430 and the first wire 410.In addition, the second insulating layer 220 may be formed between theground wire 430 and the second wire 420.

When the first and second wire electrodes 410 and 420 are disposed onmutually different layers on the top and rear surfaces of the substrate200, since the first and second wire electrodes 410 and 420 must bedisposed not to overlap each other, it is difficult to achieve a narrowbezel. In addition, it is more difficult to achieve a narrow bezel dueto a tolerance for allowing the first and second wire electrodes 410 and420 to be spaced apart from each other.

According to the touch window of the fourth embodiment, since the firstand second wire electrodes 410 and 420 overlap each other, there is noneed to take into consideration the distance between the first andsecond wire electrodes 410 and 420 and the tolerance, so that a narrowbezel may be formed. In addition, since the ground wire 430 is formedbetween the first and second wire electrodes 410 and 420 in the overlaparea of the first and second wire electrodes 410 and 420, the parasiticcapacitor may be prevented from being generated.

The insulating layer 330 may surround top and side surfaces of theground wire 430. The insulating layer 330 may be spaced apart from thesecond sensing electrode 320, but the embodiment is not limited thereto.The insulating layer 330 may be formed on the entire surface of thesubstrate 200 on which the ground wire 430 and the second sensingelectrode 320 and may expose a part of the second sensing electrode 320.That is, the second sensing electrode 320 may be formed to be exposed.

The connection part 450 for connecting the second sensing electrode 320and the second wire electrode 420 to each other may be formed. That is,the second sensing electrode 320 may be electrically connected to thesecond wire electrode 420 through the connection part 450.

The connection part 450 may be formed through a printing process. Forexample, the second sensing electrode 320 may be electrically connectedto the second wire electrode 420 through a printing process of Ag paste,but the embodiment is not limited thereto. It is sufficient if theconnection part 450 has a configuration of electrically connecting thesecond sensing electrode 320 to the second wire electrode 420.

The cover substrate 100 is disposed on at least one surface of thesubstrate 200. Although the cover substrate 100, which is disposed onthe top surface of the substrate 200 on which the second sensingelectrode 320 and the second wire electrode 420 are formed, is depictedin the drawings, the cover substrate 100 may be disposed on the rearsurface of the substrate 200 on which the first sensing electrode 310and the first wire electrode 410 are formed.

The adhesive layer 60 may be formed between the substrate 200 and thecover substrate 100. For example, the adhesive layer 60 may includeoptical clear adhesive (OCA) or optical clear resin (OCR).

Thus, the first wire electrode 410 is disposed to overlap the secondwire electrode 410. The ground wire 430 is formed between the first andsecond wire electrodes 410 and 420 in the overlap area of the first andsecond wire electrodes 410 and 420. For this reason, the bezel may benarrowed so that the parasitic capacitance may be prevented from beinggenerated.

Hereinafter, a touch window according to the fifth embodiment will bedescribed with reference to FIGS. 22 and 23. In the followingdescription of the touch window according to the fifth embodiment, thedetailed descriptions about the parts similar or identical to thosedescribed in the touch windows of the first to fourth embodiments willbe omitted in order to avoid redundancy.

Referring to FIGS. 18 to 21, a touch window according to the fourthembodiment may include first and second substrates 210 and 220, each ofwhich is divided into an active area AA and an unactive area UA. Thesecond substrate 220 may be disposed on the first substrate 210.

The first sensing electrode 310 is disposed on the active area AA of thefirst substrate 210 and the first wire electrode 410 is disposed on theunactive area UA of the first substrate 210. The second sensingelectrode 320 is disposed on the active area AA of the second substrate220 and the second wire electrode 420 is disposed on the unactive areaUA of the second substrate 220. In addition, a circuit board connectedto the first and second wire electrodes 410 and 420 may be placed.

The first and second sensing electrodes 310 and 320 and the first andsecond wire electrodes 410 and 420 may include the same material ormutually different materials. The first sensing electrode 310 may beelectrically connected to the first wire electrode 410 and the secondsensing electrode 320 may be electrically connected to the second wireelectrode 420.

The first sensing electrode 310 may be formed integrally with the firstwire electrode 410. The first sensing electrode 310 and the first wireelectrode 410 may be formed through the same process. That is, the firstsensing electrode 310 and the first wire electrode 410 may be formed onthe same layer and of the same material.

The second sensing electrode 320 may be formed integrally with thesecond wire electrode 420. The second sensing electrode 320 and thesecond wire electrode 420 may be formed through the same process. Thatis, the second sensing electrode 320 and the second wire electrode 420may be formed on the same layer and of the same material.

The insulating layer 330 is formed on the substrate 200 on which thefirst sensing electrode 310 and the first wire electrode 410. Inaddition, the ground wire 601 overlapping the first wire electrode 410is formed on the insulating layer 330. That is, a part of the groundwire 430 may overlap a part of the first wire electrode 410.

The insulating layer 330 may surround top and side surfaces of the firstwire electrode 410. The insulating layer 330 is formed on the entiresurface of the substrate 200 as shown in the drawings, but theembodiment is not limited thereto. The insulating layer 330 may beformed only on a low portion of the ground wire 430. It is sufficient ifthe insulating layer 330 has a shape which is capable of electricallyinsulating the first wire electrode 410 from the ground wire 430.

The second wire electrode 420 formed on the second substrate 220 and thefirst wire electrode 410 formed on the first substrate 210 may be formedto overlap at least partially each other. That is, the first and secondwire electrodes 410 and 420 may be formed on mutually different layersand a part of the first wire electrode 410 may overlap a part of thesecond wire electrode 420.

The ground wire 430 may be interposed between the first and second wireelectrodes 410 and 420. A shape of the ground wire 430 is not limited tothose depicted in the drawings. That is, it is sufficient if the groundwire 430 is interposed between the first and second wire electrodes 410and 420 in the overlap area of the first and second wire electrodes 410and 420.

The adhesive layer 60 is formed between the first and second substrates210 and 220. The adhesive layer 60 may be disposed to be in contact withthe ground wire 430. In addition, the adhesive layer 60 may be disposedto be in contact with the second wire electrode 420.

That is, the adhesive layer 60 may be formed between the ground wire 430and the second wire electrode 420. In addition, the insulating layer 330may be formed between the ground wire 430 and the first wire electrode410.

When the first and second wire electrodes 410 and 420 are formed onmutually different substrates and overlap each other, parasiticcapacitance is generated. Thus, when the first and second wireelectrodes 410 and 420 are formed on mutually different substrates,since the first and second wire electrodes 410 and 420 must be disposednot to overlap each other, it is difficult to achieve a narrow bezel. Inaddition, it is more difficult to achieve a narrow bezel due to atolerance for allowing the first and second wire electrodes 410 and 420to be spaced apart from each other.

According to the touch window of the embodiment, since the first andsecond wire electrodes 410 and 420 overlap each other, there is no needto take into consideration the distance between the first and secondwire electrodes 410 and 420 and the tolerance, so that a narrow bezelmay be formed. In addition, since the ground wire 430 is formed betweenthe first and second wire electrodes 410 and 420 in the overlap area ofthe first and second wire electrodes 410 and 420, the parasiticcapacitor may be prevented from being generated.

Hereinafter, a touch window according to the sixth embodiment will bedescribed with reference to FIG. 24. In the following description of thetouch window according to the sixth embodiment, the detaileddescriptions about the parts similar or identical to those described inthe touch windows of the first to fifth embodiments will be omitted inorder to avoid redundancy.

Referring to FIG. 24, the touch window according to the sixth embodimentincludes a first substrate 210 which is divided into an active area andan unactive area, and a second substrate 220 formed on the firstsubstrate 210. A first sensing electrode 310 and a first wire electrode410 are formed on the first substrate 210. A second sensing electrode320 and a second wire electrode 420 are formed on the second substrate220. In addition, a circuit board connected to the first and second wireelectrodes 410 and 420 may be placed.

The first and second sensing electrodes 310 and 320 and the first andsecond wire electrodes 410 and 420 may include the same material ormutually different materials. The first sensing electrode 310 may beelectrically connected to the first wire electrode 410 and the secondsensing electrode 320 may be electrically connected to the second wireelectrode 420.

The first sensing electrode 310 may be formed integrally with the firstwire electrode 410. In addition, the second sensing electrode 320 may beformed integrally with the second wire electrode 420.

The first and second wire electrodes 410 and 420 are disposed topartially overlap each other. In this case, a ground wire 430 isdisposed between the first and second wire electrodes 410 and 420 in theoverlap area of the first and second wire electrodes 410 and 420.

In detail, the insulating layer 330 is formed on the first substrate 210on which the first sensing electrode 310 and the first wire electrode410. The ground wire 430 which overlaps the first wire electrode 410 isformed on the insulating layer 330. That is, a part of the ground wire430 may overlap a part of the first wire electrode 410.

The shape of the ground wire 430 is not limited to that depicted in thedrawing. That is, it is sufficient if the ground wire 430 is disposedbetween the first and second wire electrodes 410 and 420 in the overlaparea of the first and second wire electrodes 410 and 420.

The insulating layer 330 may surround top and side surfaces of the firstwire electrode 410. The insulating layer 330 is formed on the entiresurface of the substrate 100 as shown in the drawing, but the embodimentis not limited thereto. The insulating layer 330 may be formed only on alow portion of the ground wire 430. It is sufficient if the insulatinglayer 330 has a shape which is capable of electrically insulating thefirst wire electrode 410 from the ground wire 430.

In this case, the adhesive layer 60 is formed between the first andsecond substrates 210 and 220. The second sensing electrode 320 and thesecond wire electrode 420 may be disposed on a top surface of the secondsubstrate 220, and the adhesive layer 60 may be formed on a rear surfaceof the second substrate 220. That is, the adhesive layer 60 may bedisposed to be in contact with the ground wire 430. In addition, theadhesive layer 60 may be disposed to be in contact with the secondsubstrate 220.

That is, the second substrate 220 and the adhesive layer 60 may beformed between the ground wire 430 and the second wire electrode 420. Inaddition, the insulating layer 330 may be formed between the ground wire430 and the first wire electrode 410.

Therefore, since the first and second wire electrodes 410 and 420overlap each other, there is no need to take into consideration thedistance between the first and second wire electrodes 410 and 420 andthe tolerance, so that a narrow bezel may be formed. In addition, sincethe ground wire 430 is formed between the first and second wireelectrodes 410 and 420 in the overlap area of the first and second wireelectrodes 410 and 420, the parasitic capacitor may be prevented frombeing generated.

Hereinafter, a touch window according to the seventh embodiment will bedescribed with reference to FIGS. 25 and 26. In the followingdescription of the touch window according to the seventh embodiment, thedetailed descriptions about the parts similar or identical to thosedescribed in the touch windows of the first to sixth embodiments will beomitted in order to avoid redundancy.

Referring to FIGS. 25 and 26, a touch window according to an embodimentmay include a cover substrate 100, a substrate 200, a wire 400 and aprinted circuit board 700.

A sensing electrode 300 may be disposed on the substrate 200. Thesensing electrode 300 serves as a sensor for sensing a touch. In detail,the substrate 200 may be provided with a first sensing electrode 310extending in one direction thereon and a second sensing electrode 320extending in another direction different from the one direction of thefirst sensing electrode 310 thereon. Meanwhile, although it is shown inthe drawings that the difference is not greatly made in the thicknessbetween the substrate 200 and the sensing electrode 300, the differencein the thickness between the substrate 200 and the sensing electrode 300may be significantly made in an actual product.

Although the sensing electrode 300 disposed in a rhombus shape aredepicted in the drawings, the embodiment is not limited thereto and thesensing electrode 310 may be formed in various shapes such as apolygonal shape including a triangular shape and a rectangular shape, acircular shape, a linear shape, an H-shape or an elliptical shape.

The blocking layer 600 may be interposed between the cover substrate 100and the substrate 200. That is, the blocking layer 600 may be disposedon the sensing electrode 300. The blocking layer 600 may block a part oflight incident upon the touch window. In detail, the blocking layer 600may block the light having a short wavelength. In more detail, theblocking layer 600 may block the light having a wavelength of 300 nm to800 nm. In detail, the blocking layer 600 may absorb the light having awavelength of 350 nm to 780 nm. Preferably, the blocking layer 600 mayabsorb the light having a wavelength of 380 nm to 700 nm.

The blocking layer 600 may include blocking particles 600 a. Theblocking particles 600 a may include oxide. In detail, the blockingparticles 600 a may include at least one of titanium oxide and zincoxide.

The blocking particles 600 a may be distributed into the base. The basemay include thermoplastic resin.

The titanium oxide may absorb light to block light. The titanium oxidemay absorb the light having a wavelength of 300 nm to 800 nm. In detail,the titanium oxide may absorb the light having a wavelength of 350 nm to780 nm. Preferably, the titanium oxide may absorb the light having awavelength of 380 nm to 700 nm.

The zinc oxide may scatter the light having of 300 nm to 800 nm. Indetail, the zinc oxide may absorb the light having a wavelength of 350nm to 780 nm. Preferably, the zinc oxide may absorb the light having awavelength of 380 nm to 700 nm.

As described above, the blocking layer 600 blocks the incident lighthaving a short wavelength, so that the visibility of the sensingelectrode 300 may be improved.

Hereinafter, a touch window according to the eighth embodiment will bedescribed with reference to FIGS. 27 and 29. In the followingdescription of the touch window according to the eighth embodiment, thedetailed descriptions about the parts similar or identical to thosedescribed in the touch windows of the first to seventh embodiments willbe omitted in order to avoid redundancy.

Meanwhile, as shown in FIG. 27, the sensing electrode 300 may include aninterconnecting structure 330. The interconnecting structure 330 mayinclude a microstructure having a diameter in the range of 5 nm to 300nm. In detail, the interconnecting structure 330 may include amicrostructure having a diameter in the range of 10 nm to 200 nm.Preferably, as one example, the interconnecting structure 330 mayinclude a microstructure having a diameter in the range of 20 nm to 100nm. The sensing electrode 300 may include a nanowire. The sensingelectrode 300 may include a metallic nanowire.

Referring to FIG. 28, the sensing electrode 300 may include a basematerial 340 and an interconnecting structure 330. The base material 340includes a photosensitive material. Since the base material 340 includethe photosensitive material, the sensing electrode 300 may be formedthrough exposure and development processes

The sensing electrode 300 may include photosensitive nanowire film. Thesensing electrode 300 may include the photosensitive nanowire film, sothat the thickness of the sensing electrode 300 may be reduced. In otherwords, the sensing electrode 300 includes the nanowire, and the entirethickness of the sensing electrode 300 may be reduced. Conventionally,when the sensing electrode 300 includes the nanowire, an overcoatinglayer must be additionally formed to prevent the nanowire from beingoxidized, so that the fabricating process may be complicated and thethickness of the touch window may be increased. However, according tothe embodiment, the nanowire is provided in the photosensitive materialso that the nanowire may be prevented from being oxidized without anyovercoating layers.

Specifically, the interconnecting structure has reflectance of about 30%to about 80% in the wavelength band of 300 nm to 800 nm, so that theinterconnecting structure allows the visibility to deteriorate. Indetail, the interconnecting structure may have reflectance of about 35%to about 75% in the wavelength band of 350 nm to 780 nm. In more detail,the interconnecting structure may have reflectance of about 37% to about70% in the wavelength band of 380 nm to 700 nm. Thus, the light having awavelength of 300 nm to 800 nm is blocked through the blocking layer600, so that the reflectance may be reduced.

In addition, even when the sensing electrode 300 includes a metal weakin light reflection, the light reflectance may be reduced through theblocking layer 600.

Next, the wire 400 is formed on the substrate 200. An electrical signalmay be applied to the sensing electrode 300 through the wire 400. Thewire 400 may include a material equal or similar to that included in thesensing electrode 300.

Meanwhile, a printed circuit board 700 connected to the wire 400 may befurther placed. Various types of printed circuit boards may serve as theprinted circuit board 700. For example, a flexible printed circuit board(FPCB) may be applied as the printed circuit board.

Meanwhile, referring to FIG. 29, the blocking layer may include a firstblocking layer 610 disposed on the sensing electrode 300 and a secondblocking layer 620 disposed under the sensing electrode 300. That is,the second blocking layer 620 may be disposed below the substrate 200.Thus, the light having a short wavelength and incident from a lowportion of the touch window may be prevented from being scattered orreflected.

Hereinafter, a touch window according to the ninth embodiment will bedescribed with reference to FIGS. 30 and 31. In the followingdescription of the touch window according to the ninth embodiment, thedetailed descriptions about the parts similar or identical to thosedescribed in the touch windows of the first to eighth embodiments willbe omitted in order to avoid redundancy.

Referring to FIGS. 30 and 31, The first sensing electrode 310 may beformed on the first substrate 210 disposed on the cover substrate 100,and the second sensing electrode 320 may be formed on the secondsubstrate 220 disposed on the first substrate 210. Optical clearadhesive may be interposed between the cover substrate 100, and thefirst and second substrates 210 and 220. In addition, the first blockinglayer 610 may be disposed on the first substrate 210 and the secondblocking layer 620 may be disposed on the second substrate 220.

Hereinafter, a touch window according to the tenth embodiment will bedescribed with reference to FIGS. 32 and 33. In the followingdescription of the touch window according to the tenth embodiment, thedetailed descriptions about the parts similar or identical to thosedescribed in the touch windows of the first to ninth embodiments will beomitted in order to avoid redundancy.

Referring to FIGS. 32 and 33, the intermediate layer 500 may be disposedon the substrate 200. The intermediate layer 500 may be disposed on thesecond sensing electrode 320. The intermediate layer 500 may support thefirst sensing electrode 310. At the same time, the intermediate layer500 may insulate the first and second sensing electrodes 310 and 320from each other.

In this case, a thickness of the intermediate layer 500 may be less thana thickness of the cover substrate 100. The thickness T2 of theintermediate layer 500 may be less than a thickness T1 of the substrate200. The thickness T2 of the intermediate layer 500 may be 0.01 to 0.95times the thickness T1 of the substrate 200. In detail, the thickness T2of the intermediate layer 500 may be 0.03 to 0.8 times the thickness T1of the substrate 200. Preferably, the thickness T2 of the intermediatelayer 500 may be 0.05 to 0.5 times the thickness T1 of the substrate200. For example, when the thickness T1 of the substrate 200 is equal to0.05 mm, the thickness T2 of the intermediate layer 500 may be equal to0.005 mm.

The intermediate layer 500 may be directly formed on the top surface ofthe substrate 200. That is, the intermediate layer 500 may be formed bydirectly coating a dielectric material on the top surface of thesubstrate 200. Then, the first sensing electrode 310 may be formed onthe intermediate layer 500.

By securing the touch window having a thin thickness through theintermediate layer 500, the transmittance may be improved and the firstand second sensing electrodes 310 and 320 may be prevented from beingcracked. Thus, the bending property and reliability of the touch windowmay be improved.

Hereinafter, a touch window according to the 11-th embodiment will bedescribed with reference to FIGS. 34 and 35. In the followingdescription of the touch window according to the 11-th embodiment, thedetailed descriptions about the parts similar or identical to thosedescribed in the touch windows of the first to tenth embodiments will beomitted in order to avoid redundancy.

Meanwhile, referring to FIGS. 34 and 35, the first sensing electrode 310may be formed on one surface of the substrate 200 disposed on the coversubstrate 100, and the second sensing electrode 320 may be formed on anopposite surface of the substrate 200. Thus, the thickness of the touchwindow may be reduced.

Hereinafter, a touch window according to the 12-th embodiment will bedescribed with reference to FIGS. 36 and 37. In the followingdescription of the touch window according to the 12-th embodiment, thedetailed descriptions about the parts similar or identical to thosedescribed in the touch windows of the first to eleventh embodiments willbe omitted in order to avoid redundancy.

Meanwhile, referring to FIGS. 36 and 37, the first sensing electrode 310may be formed on one surface of the cover substrate 100, and the secondelectrode 320 may be formed on one surface of the substrate 200 disposedon the cover substrate 100. An adhesive layer 60 may be interposedbetween the cover substrate 100 and the substrate 200. In this case, theblocking layer 600 may be disposed on the cover substrate 100.

Hereinafter, a touch window according to the 13-th embodiment will bedescribed with reference to FIGS. 38 to 40. In the following descriptionof the touch window according to the 13-th embodiment, the detaileddescriptions about the parts similar or identical to those described inthe touch windows of the first to 12-th embodiments will be omitted inorder to avoid redundancy.

Meanwhile, referring to FIG. 38, the blocking layer 600 may serve as theelectrode substrate. That is, the sensing electrode 300 and the wire 400may be directly disposed on the blocking layer 600. The blocking layer600 may be interposed between the touched surface of the cover substrate100 and the sensing electrode 300. Thus, the sensing electrode 300 maybe provided on a bottom surface of the blocking layer 600. That is, thecover substrate 100, the blocking layer 600 and the sensing electrode300 may be sequentially stacked. Thus, the thickness of the touch windowmay be more thinly secured. Meanwhile, the optical clear adhesive 500may be further disposed between the cover substrate 100 and the blockinglayer 600.

In this case, the blocking layer 600 may include a base and a dyeprovided into the base. The base may include one of PET (polyethyleneterephthalate), PC (polycarbonate), COC (Cyclic Olefin Copolymer) andCOP (Cyclic Olefin Polymer). In addition, the dye may include oneselected from the group consisting of azo dye, disperse dye andphthalocyanine dye.

The visibility may be improved through the blocking layer 600 and may besubstituted for an electrode substrate, so that the thickness of thetouch window may be secured to be thin.

Referring to FIG. 39, the first sensing electrode 310 may be formed onthe first blocking layer 610 disposed on the cover substrate 100, andthe second sensing electrode 320 may be formed on the second blockinglayer 620 disposed on the first blocking layer 610. The adhesive layer60 may be interposed between the cover substrate 100 and the firstblocking layers 610.

Referring to FIG. 40, the intermediate layer 500 may be disposed on theblocking layer 600. The intermediate layer 500 may be disposed on thesecond sensing electrode 320. The intermediate layer 500 may support thefirst sensing electrode 310.

FIGS. 41 to 44 are views illustrating a process of forming an electrodewhen the sensing electrode and/or the wire electrode have a mesh shapeaccording to the embodiments.

Referring to FIG. 41, the sensing electrode and/or the wire electrodeaccording to an embodiment may be formed in a mesh shape by etching ametallic layer disposed on an entire surface of the substrate 200. Forexample, a Cu mesh electrode having an embossed mesh shape may be formedby etching a Cu layer after metal such as Cu is deposited on the entiresurface of the substrate 200 including polyethyleneterephthalate.

In addition, referring to FIG. 42, for the sensing electrode and/or thewire electrode according to the embodiment, after forming a resin layer210 including photo-curing resin (UV resin) or thermosetting resin onthe substrate 200 and forming an intaglio pattern P having the meshshape on the resin layer 210, metallic paste 220 is filled in theintaglio pattern P or plating is performed on the intaglio pattern P, sothat the metallic layer may be formed. In this case, the intagliopattern of the resin layer may be formed by performing an imprintingprocess using a mold having an embossed pattern.

The metallic paste 220 may include a metallic paste including at leastone of Cr, Ni, Cu, Al, Ag, Mo, and the alloy thereof. Accordingly, themetallic paste is filled in the mesh-shaped intaglio pattern P and curedto form an intaglio metallic mesh electrode having the mesh shape.

In addition, referring to FIG. 43, in the sensing electrode and/or thewire electrode according to an embodiment, after forming a resin layerincluding photo-curing resin (UV resin) or thermosetting resin on thesubstrate 200, a nano-pattern and a micro-pattern having an embossed orintaglio mesh shape are formed on the resin layer 210. Then, at leastone of Cr, Ni, Cu, Al, Ag, Mo and the alloy thereof may be sputtered onthe resin layer.

The nano-pattern and the micro-pattern having the embossed shape may beformed using the mold having an intaglio pattern. The intaglio patternmay be formed through the imprinting process using the mold having anembossed pattern.

Thereafter, by etching the metallic layer formed on the nano-pattern andthe micro-pattern, only the metallic layer is removed from thenano-pattern, and only the metallic layer formed on the micro-patternremains, so that the metallic electrode having the mesh shape may beformed.

In this case, when the metallic layer is etched, the difference in theetching rate between the nano-pattern and the micro-pattern may be madedepending on the difference between the contact areas of the metalliclayer with the nano-pattern and the micro-pattern. That is, since thecontact area of the metallic layer with the micro-pattern is wider thanthe contact area of the metallic layer with the nano-pattern, theelectrode material 215 formed on the micro-pattern is less etched. Inaddition, as the etching is performed at the same etching rate, themetallic layer formed on the micro-pattern remains, and the metalliclayer formed on the nano-pattern 320 is etched and removed. Accordingly,the metallic electrode having the micro-pattern and the embossed meshshape may be formed on the substrate 200.

In addition, referring to FIG. 44, the sensing electrode and/or the wireelectrode may be formed by disposing a base substrate on the substrate200 and disposing a wire 232 in the base substrate 231. For example, thebase substrate may include a photosensitive material and the wire mayinclude a silver nanowire. The wire 232 may be disposed in only an upperor lower portion of the base substrate, or entirely and uniformly in thebase substrate.

The sensing electrode and/or the wire electrode of a touch windowaccording to an embodiment may include a metallic layer and be formed ina mesh shape as shown in FIGS. 41 to 44 described above.

The touch window according to the embodiment described above may furtherinclude a driving part disposed on the touch window and may be appliedto a touch device. That is, the touch window according to the embodimentmay include a curved or flexible touch window and may be coupled to thedriving part including a display panel to be applied to a touch device.

Specifically, the touch window may include a curved touch window. Thatis, the touch window may be fixed while having a curvature.Specifically, when the touch window is applied to a vehicle, the curvedtouch window may be applied. Thus, a touch device including the curvedtouch window may be a curved touch device.

The display panel has a display region to output an image. The displaypanel applied to the display may generally include upper and lowersubstrates. The lower substrate may include data lines, gate lines, andthin film transistors (TFT). The upper substrate is bonded to the lowersubstrate to protect components provided on the lower substrate.

The display panels may be provided in various types depending on thetype of the display according to the embodiment. In other words, thedisplay according to the embodiment may include a liquid crystal display(LCD), a field emission display, a plasma display (PDP), an organiclight emitting diode (OLED), and an electrophorectic display (EPD).Accordingly, the display panel may be configured in various types.

Hereinafter, one example of the display device to which the touch windowaccording to the above-described embodiments is applied will bedescribed with reference to FIGS. 45 to 48.

Referring to FIG. 45, a mobile terminal 1000 is shown as one example ofthe touch device. The mobile terminal may include an active area AA andan unactive area UA. The active area AA may sense a touch signal throughthe touch by a finger, and a command icon pattern part and a logo may beformed in the unactive area UA.

Referring to FIG. 46, the touch window may include a flexible touchwindow that is bendable. Accordingly, the touch device including thetouch window may be a flexible touch device. Accordingly, a user cancurve or bend the flexible touch window with a hand.

The embodiment provides a flexible touch window having improvedreliability and visibility.

According to an embodiment, there is provided a touch window whichincludes: a cover substrate; a substrate on the cover substrate; and anelectrode on the substrate, wherein the substrate includes one surfacefacing the cover substrate and an opposite surface opposite to the onesurface, the electrode is disposed on the opposite surface, and thecover substrate and the substrate have flexible curved surfaces.

According to a touch window of an embodiment, an electrode disposed on asubstrate or an intermediate layer may be disposed on an oppositesurface of the substrate, that is, an opposite surface opposite to thecover substrate.

Thus, an electrode applied to a curved touch window or a flexible touchwindow may be prevented from being cracked. Therefore, the bendingproperty and reliability of the touch window may be improved.

In addition, the touch window having a thin thickness may be securedthrough the intermediate layer, so that the transmittance may beimproved. That is, the thickness may be less than that of the structurehaving two substrates according to the related art. Specifically, sincethe intermediate layer substitutes for one substrate and adhesive, thetouch window having a thin thickness may be secured.

In addition, in the structure in which two substrates are stackedaccording to the related art, optically clear adhesive (OCA) is furtherrequired between the substrates. However, according to the touch windowof an embodiment, a single substrate is used and an electrode isdirectly formed on the intermediate layer, so that the OCA may beomitted, thereby reducing the cost.

Thus, according to the touch window of an embodiment, at least parts ofthe first and second wires are formed to overlap each other. The groundwire is disposed between the first and second wires, so that parasiticcapacitance may be prevented from being generated. Further, even thoughthe first and second wires are formed on mutually different layers, atolerance for preventing the parasitic capacitance from being generatedmay be omitted. For this reason, the touch window according to anembodiment may be formed to have a narrow bezel. For this reason, thetouch window according to an embodiment may be applied to variousdesigns.

In addition, the touch window according to an embodiment includes ablocking layer. The blocking layer may block the incident light having ashort wavelength, so that the visibility of the electrode may beimproved. Specifically, when the electrode includes an interconnectingstructure such as a nanowire, the electrode has reflectance of about 30%to about 80% in the wavelength band of 300 nm to 800 nm, so that theinterconnecting structure allows the visibility to deteriorate. Indetail, the interconnecting structure may have reflectance of about 35%to about 75% in the wavelength band of 350 nm to 780 nm. In more detail,the interconnecting structure may have reflectance of about 37% to about70% in the wavelength band of 380 nm to 700 nm. Thus, the light having awavelength of 300 nm to 800 nm is blocked through the blocking layer, sothat the reflectance may be reduced.

In addition, even when the electrode includes a metal weak in lightreflection, the light reflectance may be reduced through the blockinglayer.

Meanwhile, according to the touch window of another embodiment, theblocking layer substitutes for an electrode substrate, so that thevisibility may be improved and the thickness of the touch window may besecured to be thin.

Referring to FIG. 47, the touch window may be applied to a vehiclenavigation system as well as the touch device of a mobile terminal. Inaddition, referring to FIG. 47, the touch window may be applied to aninner part of a vehicle. In other words, the touch window may be appliedto various parts in the vehicle. Accordingly, the touch window may beapplied to a dashboard as well as a PND (Personal Navigation Display),so that a CID (Center Information Display) may be realized. However, theembodiment is not limited to the above, and the touch device may be usedfor various electronic appliances.

Any reference in this specification to “one embodiment,” “anembodiment,” “example embodiment,” etc., means that a particularfeature, structure, or characteristic described in connection with theembodiment is included in at least one embodiment of the invention. Theappearances of such phrases in various places in the specification arenot necessarily all referring to the same embodiment. Further, when aparticular feature, structure, or characteristic is described inconnection with any embodiment, it is submitted that it is within thepurview of one skilled in the art to effect such feature, structure, orcharacteristic in connection with other ones of the embodiments.

Although embodiments have been described with reference to a number ofillustrative embodiments thereof, it should be understood that numerousother modifications and embodiments can be devised by those skilled inthe art that will fall within the spirit and scope of the principles ofthis disclosure. More particularly, various variations and modificationsare possible in the component parts and/or arrangements of the subjectcombination arrangement within the scope of the disclosure, the drawingsand the appended claims. In addition to variations and modifications inthe component parts and/or arrangements, alternative uses will also beapparent to those skilled in the art.

What is claimed is:
 1. A touch window comprising: a substrate; anelectrode provided on the substrate; a cover substrate provided on thesubstrate; and an adhesive layer provided between the cover substrateand the substrate, wherein the electrode includes; a first sensingelectrode extending in a first direction on a first surface of thesubstrate; a second sensing electrode extending in a second directionthat is different from the first direction on a second surface of thesubstrate, a wire electrode including a first wire electrode connectedto the first sensing electrode, and a second wire electrode connected tothe second sensing electrode, a ground wire provide on the secondsurface of the substrate, wherein the first sensing electrode and secondsensing electrode have a mesh shape including a mesh line and a meshopening, wherein the first sensing electrode and the second sensingelectrode include at least one of chromium (Cr), nickel (Ni), copper(Cu), aluminum (Al), silver (Ag), or Molybdenum (Mo), and wherein a linewidth of the mesh line is 1.5 μm to 5 μm.
 2. The touch window of claim1, wherein the second sensing electrode and the ground wire may beformed of the same material.
 3. The touch window of claim 1, wherein thefirst wire electrode formed integrally with the first sensing electrode.4. The touch window of claim 1, wherein the adhesive layer disposed tobe in contact with the ground wire.
 5. The touch window of claim 1,wherein the adhesive layer disposed to be in contact with the secondwire electrode.
 6. The touch window of claim 1, wherein the ground wireformed between the first and second wire electrodes.
 7. The touch windowof claim 1, wherein the first wire electrode and the second wireelectrode are disposed on different planes.
 8. The touch window of claim1, further comprising a blocking layer disposed between the coversubstrate and the substrate.
 10. The touch window of claim 1, whereinthe blocking layer blocks light having a wavelength of 300 nm to 800 nm.11. The touch window of claim 1, wherein the substrate includes at leastone of polyethylene terephthalate (PET), polycarbonate (PC), cyclicolefin copolymer (COC) or cyclic olefin polymer (COP).
 12. The touchwindow of claim 1, wherein the cover substrate includes a partial flatsurface and a partial curved surface at an outermost edge of the coversubstrate.
 13. The touch window of claim 1, wherein the ground wire andthe second sensing electrode are disposed on the same layer.
 14. Thetouch window of claim 6, wherein the ground wire and the first andsecond wire electrodes are spaced apart from each other.
 15. A touchdevice comprising: a display panel; and a touch window on the displaypanel; wherein the display panel includes a first substrate, wherein athin film transistor is formed on the first substrate, wherein the touchwindow includes; a substrate; an electrode provided on the substrate; acover substrate provided on the substrate; and an adhesive layer provedbetween the cover substrate and the substrate, wherein the electrodeincludes; a first sensing electrode extending in a first direction on afirst surface of the substrate; a second sensing electrode extending ina second direction that is different from the first direction on asecond surface of the substrate, a wire electrode including a first wireelectrode connected to the first sensing electrode, and a second wireelectrode connected to the second sensing electrode, a ground wireprovide on the second surface of the substrate, wherein the firstsensing electrode and second sensing electrode have a mesh shapeincluding a mesh line and a mesh opening, wherein the first sensingelectrode and the second sensing electrode include at least one ofchromium (Cr), nickel (Ni), copper (Cu), aluminum (Al), silver (Ag), orMolybdenum (Mo), and wherein a line width of the mesh line is 1.5 μm to5 μm.